# # Data product developed by Dr. E. Thiemann from the # Laboratory for Atmospheric and Space Physics, Boulder, Colorado # in the frame of the PROBA2 guest investigator program. # # Please address your questions to E. Thiemann (thiemann@lasp.colorado.edu) and # to the LYRA Principal Investigator M. Dominique (marie.dominique@oma.be) # # PROBA2 data products are open to all. # Users should however refer to the following paper: http://arxiv.org/abs/1708.08833 # and acknowledge the instrument according to the rules described # at http://proba2.oma.be/data/termsOfUse in their papers and presentations # # Website reference http://proba2.oma.be/lyra/data/EarthAtmosphere/ # # Description: # Summed neutral N2 and O number density profiles, spanning altitudes between 150 and 400 km # retrieved from LYRA data acquired during occultations by the unit 3 (backup unit) zirconium # channel (bandpass: 1-2 nm + 6-20 nm). # # Radial distance is the distance from the center of Earth expressed in km to which the density corresponds. # Density O-N2 provides the summed number density of neutral O and N2 in units of radial distance and cm^-3. # The systematic error is a signed value (asymmetric) in fractional units and is primarily from the error made by # assuming that the absorption cross-sections of O and N2 are equal; a secondary source of systematic error is # from using a single-scale height atmosphere in the reference atmosphere used by the retrieval algorithm. # The random error is an unsigned value (to be applied symmetrically to the measurement) in fractional # units and gathers the uncertainties from solar spectra, solar variability and measurement noise. # Both uncertainties are described in http://arxiv.org/abs/1708.08833. # The Longitude and Latitude (in degrees) columns refer to the tangential point along the # line-of-sight, where most of the absorption occurs. # # Scale height = 33.747051 km # Date (UTC) = 2016-12-13T10:21:49.085 # Date (julian) = 2457735.93181811 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6507.1305 7.3215752e+10 0.080875193 0.034433382 -35.025345 51.215418 6509.2105 6.5592771e+10 0.090670911 0.035060601 -35.126912 51.128359 6511.2905 5.8111882e+10 0.10056152 0.035687820 -35.228489 51.041294 6513.3705 5.1717345e+10 0.11070152 0.036315040 -35.330070 50.954225 6515.4505 4.6161458e+10 0.12107643 0.036942259 -35.431651 50.867156 6517.5305 4.1208568e+10 0.13167858 0.037569478 -35.533221 50.783426 6519.6105 3.7102151e+10 0.14261171 0.038196697 -35.634790 50.699995 6521.6905 3.3459545e+10 0.15380280 0.038823917 -35.735775 50.615980 6523.7705 3.0242420e+10 0.16010896 0.039370075 -35.833716 50.528921 6525.8505 2.7323772e+10 0.16483331 0.039685150 -35.931657 50.441862 6527.9305 2.4684881e+10 0.17012940 0.041392019 -36.029597 50.354804 6530.0105 2.2281470e+10 0.17440395 0.043843386 -36.127536 50.267746 6532.0905 2.0123002e+10 0.17725560 0.046759791 -36.225476 50.180688 6534.1705 1.8224011e+10 0.17837601 0.047992252 -36.317080 50.099262 6536.2505 1.6672569e+10 0.17828533 0.048014631 -36.405236 50.020900 6538.3305 1.5372317e+10 0.17910763 0.049317619 -36.493392 49.942539 6540.4105 1.4171731e+10 0.17856546 0.051048036 -36.585149 49.859092 6542.4905 1.2997275e+10 0.17607749 0.051188463 -36.679464 49.772033 6544.5705 1.1817689e+10 0.17349577 0.052107158 -36.773778 49.684973 6546.6505 1.0740790e+10 0.17053033 0.052999795 -36.868090 49.600919 6548.7305 9.7988626e+09 0.16770507 0.053885803 -36.962403 49.517488 6550.8105 8.9413850e+09 0.16554674 0.055188307 -37.056716 49.433798 6552.8905 8.1811192e+09 0.16374251 0.055362623 -37.151043 49.346729 6554.9705 7.4729719e+09 0.16155168 0.054852746 -37.245370 49.259660 6557.0505 6.8437790e+09 0.15889868 0.053834436 -37.338550 49.172594 6559.1305 6.2819584e+09 0.15574483 0.052372448 -37.429236 49.085535 6561.2105 5.7695453e+09 0.15266379 0.051268935 -37.519921 48.998476 6563.2905 5.3030078e+09 0.14986855 0.049592284 -37.610607 48.911418 6565.3705 4.8729945e+09 0.14716533 0.047897645 -37.701293 48.824360 6567.4505 4.4878477e+09 0.14472295 0.046236243 -37.791979 48.737302 6569.5305 4.1414918e+09 0.14229034 0.044886955 -37.882665 48.650244 6571.6105 3.8278490e+09 0.13994618 0.044336523 -37.973350 48.563185 6573.6905 3.5370569e+09 0.13697144 0.043103332 -38.063875 48.476126 6575.7706 3.2689991e+09 0.13398603 0.041601602 -38.150944 48.389056 6577.8506 3.0214652e+09 0.13079098 0.038884357 -38.238014 48.301987 6579.9306 2.8018634e+09 0.12731624 0.036558929 -38.326125 48.214921 6582.0106 2.5985059e+09 0.12385360 0.035290921 -38.416811 48.127862 6584.0906 2.4192380e+09 0.12029973 0.034466178 -38.507496 48.040803 6586.1706 2.2559224e+09 0.11685800 0.033169091 -38.594327 47.953744 6588.2506 2.0979006e+09 0.11379314 0.033296253 -38.677758 47.866685 6590.3306 1.9506264e+09 0.11023978 0.030447153 -38.761189 47.779626 6592.4106 1.8191900e+09 0.10692485 0.027674734 -38.847430 47.692568 6594.4906 1.6957524e+09 0.10413034 0.025903221 -38.934489 47.605511 6596.5706 1.5784157e+09 0.10152708 0.025724680 -39.021483 47.518453 6598.6506 1.4675482e+09 0.099777572 0.025096555 -39.104925 47.431382 6600.7306 1.3595077e+09 0.099678740 0.026491822 -39.188367 47.344312 6602.8106 1.2737174e+09 0.098844850 0.026824911 -39.271806 47.257245 6604.8906 1.2009792e+09 0.097951618 0.026600079 -39.355237 47.170187 6606.9706 1.1270264e+09 0.096825303 0.025759839 -39.438668 47.083130 6609.0506 1.0571007e+09 0.093844879 0.023720961 -39.522098 46.996071 6611.1306 9.8711623e+08 0.091093837 0.024875173 -39.605529 46.909012 6613.2106 9.2228421e+08 0.090164310 0.023650860 -39.688960 46.821953 6615.2906 8.6617574e+08 0.088850165 0.023260473 -39.772391 46.734895 6617.3706 8.0877312e+08 0.087746232 0.023562122 -39.855821 46.647838 6619.4506 7.5456600e+08 0.087074290 0.024634639 -39.939241 46.560780 6621.5306 7.1042498e+08 0.086007226 0.024913573 -40.019099 46.473710 6623.6106 6.6855310e+08 0.084220780 0.024718049 -40.098914 46.386639 6625.6906 6.3119165e+08 0.082930168 0.026221718 -40.178726 46.299572 6627.7706 5.8965552e+08 0.081084655 0.025614489 -40.258530 46.212514 6629.8506 5.5103098e+08 0.079748024 0.025955310 -40.338333 46.125457 6631.9306 5.1561413e+08 0.077910028 0.026025298 -40.418137 46.038399 6634.0106 4.8178675e+08 0.076318861 0.026327618 -40.497939 45.951340 6636.0906 4.5826761e+08 0.074682641 0.026514557 -40.577741 45.864281 6638.1706 4.3258226e+08 0.073673623 0.025664208 -40.654930 45.774606 6640.2506 4.0935155e+08 0.073795365 0.025239986 -40.731107 45.683920 6642.3306 3.8522291e+08 0.073980184 0.025165227 -40.807285 45.593234 6644.4106 3.6076105e+08 0.073222055 0.025387988 -40.883470 45.506035 6646.4906 3.3506198e+08 0.072399077 0.026174121 -40.959656 45.418964 6648.5706 3.1093400e+08 0.071460930 0.027346277 -41.037820 45.329634 6650.6506 2.8634670e+08 0.071049356 0.026404189 -41.123519 45.231692 6652.7307 2.6789827e+08 0.070588854 0.027451553 -41.209218 45.133751 6654.8107 2.5714571e+08 0.069344926 0.027690879 -41.287703 45.044053 6656.8907 2.4276025e+08 0.067266278 0.028805142 -41.363878 44.956994 6658.9707 2.2788171e+08 0.065466549 0.031782564 -41.440054 44.869936 6661.0507 2.0700613e+08 0.063899011 0.032560753 -41.516231 44.782878 6663.1307 1.9326876e+08 0.062337418 0.032447002 -41.592409 44.695820 6665.2107 1.8947547e+08 0.061387839 0.028201943 -41.667701 44.608762 6667.2907 1.8083733e+08 0.060446601 0.027210226 -41.740248 44.521703 6669.3707 1.7086295e+08 0.058950418 0.027974995 -41.812796 44.434644 6671.4507 1.5841358e+08 0.058364534 0.026871771 -41.885348 44.347580 6673.5307 1.4636003e+08 0.057187236 0.028252887 -41.957907 44.260511 6675.6107 1.4455183e+08 0.054991976 0.030968037 -42.030465 44.173442 6677.6907 1.3926761e+08 0.053270826 0.031376338 -42.109645 44.078427 6679.7707 1.3037580e+08 0.052773274 0.029630910 -42.191264 43.980484 6681.8507 1.2134447e+08 0.053080042 0.030309994 -42.270340 43.884576 6683.9307 1.1037077e+08 0.052739603 0.032552521 -42.342888 43.793890 6686.0107 1.0253997e+08 0.051884606 0.033767307 -42.415437 43.703204 6688.0907 98886356. 0.049527005 0.033806127 -42.486086 43.614417 6690.1707 92792513. 0.047543653 0.033096301 -42.555007 43.527358 6692.2507 80653680. 0.045484808 0.032474202 -42.623928 43.440299 6694.3307 72266308. 0.043609198 0.030797525 -42.699458 43.344895 6696.4107 69622712. 0.042769621 0.029846427 -42.776996 43.246954 6698.4907 68991932. 0.040878354 0.030891375 -42.852958 43.152452 6700.5707 71037470. 0.037650569 0.031091033 -42.925516 43.065381 6702.6507 63242139. 0.028570061 0.033396330 -42.998073 42.978311 6704.7307 58528969. -0.017857829 0.036536375 -43.066562 42.891248 6706.8107 58055305. 0.020811866 0.039857403 -43.131856 42.804190 6708.8907 56789924. 0.10298288 0.041013546 -43.197150 42.717133